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TitreThe significance of mass-transport deposits for the evolution of a proglacial continental slope
AuteurHuppertz, T J; Piper, D J W; Mosher, D C; Jenner, K
SourceSubmarine mass movements and their consequences; par Mosher, D C (éd.); Shipp, C (éd.); Moscardelli, L (éd.); Chaytor, J (éd.); Baxter, C (éd.); Lee, H (éd.); Urgeles, R (éd.); Advances in Natural and Technological Hazards Research vol. 28, 2010 p. 631-641, https://doi.org/10.1007/978-90-481-3071-9 51
Année2010
Séries alt.Secteur des sciences de la Terre, Contribution externe 20090131
ÉditeurSpringer Netherlands
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1007/978-90-481-3071-9 51
Mediapapier; en ligne; numérique
Formatspdf
ProvinceRégion extracotière de l'est
Lat/Long OENS -66.5000 -55.0000 45.0000 40.5000
Sujetssédiments marins; sédiments marins; milieux marins; transport sous-marin; transport des sediments; milieu sédimentaire; glissements de pentes; topographie du fond océanique; topographie du fond océanique; canyons sous-marins; caractéristiques sous-marines; géologie marine; sédimentologie
Illustrationslocation maps; profiles
ProgrammeAléas géologiques et contraintes à la mise en valeur des ressources extracôtières, Géosciences à l'appui de la gestion des océans
ProgrammeLe Programme de recherche et de développement énergétiques (PRDE)
Résumé(disponible en anglais seulement)
The continental slope off southeast Canada has been influenced by ice sheet fluctuations in the Pleistocene. These ice sheets have supplied the bulk of the sediment, which is the driving process for the observed slope architecture. Several studies with a more local scope have explored the Late Quaternary geological history of the Scotian slope and have used the sedimentary sequence including mass-transport deposits (MTDs) to understand depositional processes on the slope over time. Using this existing understanding of the geological setting on the slope, a new slope-wide regional seismic stratigraphy was developed. This stratigraphy was used to understand variations of MTD deposition on a regional scale on the Scotian Margin. The spatial occurrence of different types of MTDs and their relationship to the regional morphology is used to establish different MTD zones. Mapping of the zones improved the understanding of slope stability and the importance of MTDs for continental-margin evolution.
GEOSCAN ID247681